* {
    margin: 0;
    padding: 0;
    list-style-type: none; /* 修正拼写错误 */
}

/* nav导航盒子 */
div.navl {
    width: 800px;
    height: 36px;
    line-height: 36px;
    text-align: center;
    font-size: 12px;
    position: relative;
    background: #643519; /* 修正错误的字符 */
    margin: 40px auto 0 auto;
}

/* nav-main */
ul.nav-main {
    width: 100%;
    height: 100%;
    list-style-type: none;
}

ul.nav-main span {
    display: inline-block;
    margin-left: 18px; /* 修正拼写错误 */
    width: 7px;
    height: 7px;
    background: url('https://img0.baidu.com/it/u=265754228,947365226&fm=253&fmt=auto&app=138&f=GIF?w=402&h=435') no-repeat;
}


/* 图标向下旋转 */
.hover-down {
    transition-duration: 0.5s; /* 分号应该在属性值之后 */
    transform: rotate(0deg); /* 修正分号和冒号 */
    -webkit-transform: rotate(0deg); /* 修正冒号 */
}

/* 导航条设置 */
ul.nav-main > li {
    width: 120px;
    height: 100%;
    display: block;
    float: left;
    background: #643519;
    color: #fff; /* 分号应该在属性值之后 */
    margin-right: 1px;
    cursor: pointer;
}

ul.nav-main > li:hover {
    background: #643519;
}

/* 隐藏盒子设置 */
div.hidden-box {
    width: 118px;
    border: 1px solid #643519;
    border-top: 0;
    position: absolute;
    display: none;
    background: #fff;
    top: 36px;
}

div.hidden-box > ul {
    list-style-type: none;
    color: #643519;
}
ul.nav-main > li:hover {
    background: #643519;
}

/* 隐藏盒子设置 */
div.hidden-box {
    width: 118px;
    border: 1px solid #643519;
    border-top: 0;
    position: absolute;
    display: none;
    background: #fff;
    top: 36px;
}

div.hidden-box > ul {
    list-style-type: none;
    cursor: pointer;
}

/* 隐藏盒子位置设置 */
.hidden-box li:hover {
    background: #643519;
    color: #fff;
}

.hidden-loc-index {
    left: 121px;
}

.hidden-loc-us {
    left: 242px;
}

.hidden-loc-info {
    left: 363px;
}

.box04 {
    left: 485px;
}